Finding the Third Proportional to 123,037,953 and 290,442,849

Step by Step Solution

1. Step 1: Write the proportion equation
   123,037,953 : 290,442,849 = 290,442,849 : x
2. Step 2: Convert to fraction form
   123,037,953/290,442,849 = 290,442,849/x
3. Step 3: Cross multiply
   123,037,953x = 290,442,849 × 290,442,849
4. Step 4: Simplify right side
   123,037,953x = 84,357,048,535,236,800
5. Step 5: Solve for x
   x = 84,357,048,535,236,800/123,037,953
6. Step 6: Final answer
   x = 685,618,107.90