Finding the Third Proportional to 499,225.50 and 706,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   499,225.50 : 706,387.50 = 706,387.50 : x
2. Step 2: Convert to fraction form
   499,225.50/706,387.50 = 706,387.50/x
3. Step 3: Cross multiply
   499,225.50x = 706,387.50 × 706,387.50
4. Step 4: Simplify right side
   499,225.50x = 498,983,300,156.25
5. Step 5: Solve for x
   x = 498,983,300,156.25/499,225.50
6. Step 6: Final answer
   x = 999,514.85