Finding the Third Proportional to 123,037,955 and 290,442,854

Step by Step Solution

1. Step 1: Write the proportion equation
   123,037,955 : 290,442,854 = 290,442,854 : x
2. Step 2: Convert to fraction form
   123,037,955/290,442,854 = 290,442,854/x
3. Step 3: Cross multiply
   123,037,955x = 290,442,854 × 290,442,854
4. Step 4: Simplify right side
   123,037,955x = 84,357,051,439,665,312
5. Step 5: Solve for x
   x = 84,357,051,439,665,312/123,037,955
6. Step 6: Final answer
   x = 685,618,120.36