Finding the Third Proportional to 198,643.50 and 432,756

Step by Step Solution

1. Step 1: Write the proportion equation
   198,643.50 : 432,756 = 432,756 : x
2. Step 2: Convert to fraction form
   198,643.50/432,756 = 432,756/x
3. Step 3: Cross multiply
   198,643.50x = 432,756 × 432,756
4. Step 4: Simplify right side
   198,643.50x = 187,277,755,536
5. Step 5: Solve for x
   x = 187,277,755,536/198,643.50
6. Step 6: Final answer
   x = 942,783.20