Finding the Third Proportional to 329,499 and 719,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   329,499 : 719,422.50 = 719,422.50 : x
2. Step 2: Convert to fraction form
   329,499/719,422.50 = 719,422.50/x
3. Step 3: Cross multiply
   329,499x = 719,422.50 × 719,422.50
4. Step 4: Simplify right side
   329,499x = 517,568,733,506.25
5. Step 5: Solve for x
   x = 517,568,733,506.25/329,499
6. Step 6: Final answer
   x = 1,570,774.82