Finding the Third Proportional to 253,428 and 548,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,428 : 548,680.50 = 548,680.50 : x
2. Step 2: Convert to fraction form
   253,428/548,680.50 = 548,680.50/x
3. Step 3: Cross multiply
   253,428x = 548,680.50 × 548,680.50
4. Step 4: Simplify right side
   253,428x = 301,050,291,080.25
5. Step 5: Solve for x
   x = 301,050,291,080.25/253,428
6. Step 6: Final answer
   x = 1,187,912.51