Finding the Third Proportional to 503,106 and 747,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   503,106 : 747,811.50 = 747,811.50 : x
2. Step 2: Convert to fraction form
   503,106/747,811.50 = 747,811.50/x
3. Step 3: Cross multiply
   503,106x = 747,811.50 × 747,811.50
4. Step 4: Simplify right side
   503,106x = 559,222,039,532.25
5. Step 5: Solve for x
   x = 559,222,039,532.25/503,106
6. Step 6: Final answer
   x = 1,111,539.20