Finding the Third Proportional to 501,838.50 and 715,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   501,838.50 : 715,387.50 = 715,387.50 : x
2. Step 2: Convert to fraction form
   501,838.50/715,387.50 = 715,387.50/x
3. Step 3: Cross multiply
   501,838.50x = 715,387.50 × 715,387.50
4. Step 4: Simplify right side
   501,838.50x = 511,779,275,156.25
5. Step 5: Solve for x
   x = 511,779,275,156.25/501,838.50
6. Step 6: Final answer
   x = 1,019,808.71