Finding the Third Proportional to 2,139,973,789.50 and 4,340,118,783.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,973,789.50 : 4,340,118,783.38 = 4,340,118,783.38 : x
2. Step 2: Convert to fraction form
   2,139,973,789.50/4,340,118,783.38 = 4,340,118,783.38/x
3. Step 3: Cross multiply
   2,139,973,789.50x = 4,340,118,783.38 × 4,340,118,783.38
4. Step 4: Simplify right side
   2,139,973,789.50x = 18,836,631,053,804,490,752
5. Step 5: Solve for x
   x = 18,836,631,053,804,490,752/2,139,973,789.50
6. Step 6: Final answer
   x = 8,802,271,853.15