Finding the Third Proportional to 613,617 and 861,376.50

Step by Step Solution

1. Step 1: Write the proportion equation
   613,617 : 861,376.50 = 861,376.50 : x
2. Step 2: Convert to fraction form
   613,617/861,376.50 = 861,376.50/x
3. Step 3: Cross multiply
   613,617x = 861,376.50 × 861,376.50
4. Step 4: Simplify right side
   613,617x = 741,969,474,752.25
5. Step 5: Solve for x
   x = 741,969,474,752.25/613,617
6. Step 6: Final answer
   x = 1,209,173.60