Finding the Third Proportional to 31,838.70 and 68,867.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,838.70 : 68,867.72 = 68,867.72 : x
2. Step 2: Convert to fraction form
   31,838.70/68,867.72 = 68,867.72/x
3. Step 3: Cross multiply
   31,838.70x = 68,867.72 × 68,867.72
4. Step 4: Simplify right side
   31,838.70x = 4,742,762,685.83
5. Step 5: Solve for x
   x = 4,742,762,685.83/31,838.70
6. Step 6: Final answer
   x = 148,962.22