Finding the Third Proportional to 103,990 and 156,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,990 : 156,915.50 = 156,915.50 : x
2. Step 2: Convert to fraction form
   103,990/156,915.50 = 156,915.50/x
3. Step 3: Cross multiply
   103,990x = 156,915.50 × 156,915.50
4. Step 4: Simplify right side
   103,990x = 24,622,474,140.25
5. Step 5: Solve for x
   x = 24,622,474,140.25/103,990
6. Step 6: Final answer
   x = 236,777.33