Finding the Third Proportional to 90,803.25 and 199,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,803.25 : 199,516.50 = 199,516.50 : x
2. Step 2: Convert to fraction form
   90,803.25/199,516.50 = 199,516.50/x
3. Step 3: Cross multiply
   90,803.25x = 199,516.50 × 199,516.50
4. Step 4: Simplify right side
   90,803.25x = 39,806,833,772.25
5. Step 5: Solve for x
   x = 39,806,833,772.25/90,803.25
6. Step 6: Final answer
   x = 438,385.56