Finding the Third Proportional to 249,866,976,917.82 and 380,655,055,628.72

Step by Step Solution

1. Step 1: Write the proportion equation
   249,866,976,917.82 : 380,655,055,628.72 = 380,655,055,628.72 : x
2. Step 2: Convert to fraction form
   249,866,976,917.82/380,655,055,628.72 = 380,655,055,628.72/x
3. Step 3: Cross multiply
   249,866,976,917.82x = 380,655,055,628.72 × 380,655,055,628.72
4. Step 4: Simplify right side
   249,866,976,917.82x = 144,898,271,375,703,893,082,112
5. Step 5: Solve for x
   x = 144,898,271,375,703,893,082,112/249,866,976,917.82
6. Step 6: Final answer
   x = 579,901,646,720.45