Finding the Third Proportional to 31,406.63 and 68,344.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,406.63 : 68,344.88 = 68,344.88 : x
2. Step 2: Convert to fraction form
   31,406.63/68,344.88 = 68,344.88/x
3. Step 3: Cross multiply
   31,406.63x = 68,344.88 × 68,344.88
4. Step 4: Simplify right side
   31,406.63x = 4,671,021,938.77
5. Step 5: Solve for x
   x = 4,671,021,938.77/31,406.63
6. Step 6: Final answer
   x = 148,727.28