Finding the Third Proportional to 539,199 and 715,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   539,199 : 715,486.50 = 715,486.50 : x
2. Step 2: Convert to fraction form
   539,199/715,486.50 = 715,486.50/x
3. Step 3: Cross multiply
   539,199x = 715,486.50 × 715,486.50
4. Step 4: Simplify right side
   539,199x = 511,920,931,682.25
5. Step 5: Solve for x
   x = 511,920,931,682.25/539,199
6. Step 6: Final answer
   x = 949,410.02