Finding the Third Proportional to 13,899.94 and 29,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,899.94 : 29,986.88 = 29,986.88 : x
2. Step 2: Convert to fraction form
   13,899.94/29,986.88 = 29,986.88/x
3. Step 3: Cross multiply
   13,899.94x = 29,986.88 × 29,986.88
4. Step 4: Simplify right side
   13,899.94x = 899,212,672.27
5. Step 5: Solve for x
   x = 899,212,672.27/13,899.94
6. Step 6: Final answer
   x = 64,691.85