Finding the Third Proportional to 13,123.90 and 28,799.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.90 : 28,799.30 = 28,799.30 : x
2. Step 2: Convert to fraction form
   13,123.90/28,799.30 = 28,799.30/x
3. Step 3: Cross multiply
   13,123.90x = 28,799.30 × 28,799.30
4. Step 4: Simplify right side
   13,123.90x = 829,399,500.49
5. Step 5: Solve for x
   x = 829,399,500.49/13,123.90
6. Step 6: Final answer
   x = 63,197.65