Finding the Third Proportional to 503,039.25 and 747,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   503,039.25 : 747,724.50 = 747,724.50 : x
2. Step 2: Convert to fraction form
   503,039.25/747,724.50 = 747,724.50/x
3. Step 3: Cross multiply
   503,039.25x = 747,724.50 × 747,724.50
4. Step 4: Simplify right side
   503,039.25x = 559,091,927,900.25
5. Step 5: Solve for x
   x = 559,091,927,900.25/503,039.25
6. Step 6: Final answer
   x = 1,111,428.04