Finding the Third Proportional to 123,037,964 and 290,442,874

Step by Step Solution

1. Step 1: Write the proportion equation
   123,037,964 : 290,442,874 = 290,442,874 : x
2. Step 2: Convert to fraction form
   123,037,964/290,442,874 = 290,442,874/x
3. Step 3: Cross multiply
   123,037,964x = 290,442,874 × 290,442,874
4. Step 4: Simplify right side
   123,037,964x = 84,357,063,057,379,872
5. Step 5: Solve for x
   x = 84,357,063,057,379,872/123,037,964
6. Step 6: Final answer
   x = 685,618,164.63