Finding the Third Proportional to 298,707 and 473,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,707 : 473,215.50 = 473,215.50 : x
2. Step 2: Convert to fraction form
   298,707/473,215.50 = 473,215.50/x
3. Step 3: Cross multiply
   298,707x = 473,215.50 × 473,215.50
4. Step 4: Simplify right side
   298,707x = 223,932,909,440.25
5. Step 5: Solve for x
   x = 223,932,909,440.25/298,707
6. Step 6: Final answer
   x = 749,674.13