Finding the Third Proportional to 13,611.80 and 29,310.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,611.80 : 29,310.61 = 29,310.61 : x
2. Step 2: Convert to fraction form
   13,611.80/29,310.61 = 29,310.61/x
3. Step 3: Cross multiply
   13,611.80x = 29,310.61 × 29,310.61
4. Step 4: Simplify right side
   13,611.80x = 859,111,821.93
5. Step 5: Solve for x
   x = 859,111,821.93/13,611.80
6. Step 6: Final answer
   x = 63,115.24