Finding the Third Proportional to 78,720,473 and 108,514,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,720,473 : 108,514,618.50 = 108,514,618.50 : x
2. Step 2: Convert to fraction form
   78,720,473/108,514,618.50 = 108,514,618.50/x
3. Step 3: Cross multiply
   78,720,473x = 108,514,618.50 × 108,514,618.50
4. Step 4: Simplify right side
   78,720,473x = 11,775,422,428,200,542
5. Step 5: Solve for x
   x = 11,775,422,428,200,542/78,720,473
6. Step 6: Final answer
   x = 149,585,260.09