Finding the Third Proportional to 123,037,959 and 290,442,864

Step by Step Solution

1. Step 1: Write the proportion equation
   123,037,959 : 290,442,864 = 290,442,864 : x
2. Step 2: Convert to fraction form
   123,037,959/290,442,864 = 290,442,864/x
3. Step 3: Cross multiply
   123,037,959x = 290,442,864 × 290,442,864
4. Step 4: Simplify right side
   123,037,959x = 84,357,057,248,522,496
5. Step 5: Solve for x
   x = 84,357,057,248,522,496/123,037,959
6. Step 6: Final answer
   x = 685,618,145.28