Finding the Third Proportional to 31,187.63 and 67,706.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,187.63 : 67,706.25 = 67,706.25 : x
2. Step 2: Convert to fraction form
   31,187.63/67,706.25 = 67,706.25/x
3. Step 3: Cross multiply
   31,187.63x = 67,706.25 × 67,706.25
4. Step 4: Simplify right side
   31,187.63x = 4,584,136,289.06
5. Step 5: Solve for x
   x = 4,584,136,289.06/31,187.63
6. Step 6: Final answer
   x = 146,985.74