Finding the Third Proportional to 322,931 and 707,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   322,931 : 707,422.50 = 707,422.50 : x
2. Step 2: Convert to fraction form
   322,931/707,422.50 = 707,422.50/x
3. Step 3: Cross multiply
   322,931x = 707,422.50 × 707,422.50
4. Step 4: Simplify right side
   322,931x = 500,446,593,506.25
5. Step 5: Solve for x
   x = 500,446,593,506.25/322,931
6. Step 6: Final answer
   x = 1,549,701.31