Finding the Third Proportional to 328,969.50 and 706,890

Step by Step Solution

1. Step 1: Write the proportion equation
   328,969.50 : 706,890 = 706,890 : x
2. Step 2: Convert to fraction form
   328,969.50/706,890 = 706,890/x
3. Step 3: Cross multiply
   328,969.50x = 706,890 × 706,890
4. Step 4: Simplify right side
   328,969.50x = 499,693,472,100
5. Step 5: Solve for x
   x = 499,693,472,100/328,969.50
6. Step 6: Final answer
   x = 1,518,965.96