Finding the Third Proportional to 428,105.25 and 563,061.38

Step by Step Solution

1. Step 1: Write the proportion equation
   428,105.25 : 563,061.38 = 563,061.38 : x
2. Step 2: Convert to fraction form
   428,105.25/563,061.38 = 563,061.38/x
3. Step 3: Cross multiply
   428,105.25x = 563,061.38 × 563,061.38
4. Step 4: Simplify right side
   428,105.25x = 317,038,112,016.89
5. Step 5: Solve for x
   x = 317,038,112,016.89/428,105.25
6. Step 6: Final answer
   x = 740,561.14