Finding the Third Proportional to 198,411.50 and 298,069

Step by Step Solution

1. Step 1: Write the proportion equation
   198,411.50 : 298,069 = 298,069 : x
2. Step 2: Convert to fraction form
   198,411.50/298,069 = 298,069/x
3. Step 3: Cross multiply
   198,411.50x = 298,069 × 298,069
4. Step 4: Simplify right side
   198,411.50x = 88,845,128,761
5. Step 5: Solve for x
   x = 88,845,128,761/198,411.50
6. Step 6: Final answer
   x = 447,782.15