Finding the Third Proportional to 31,116 and 66,552

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116 : 66,552 = 66,552 : x
2. Step 2: Convert to fraction form
   31,116/66,552 = 66,552/x
3. Step 3: Cross multiply
   31,116x = 66,552 × 66,552
4. Step 4: Simplify right side
   31,116x = 4,429,168,704
5. Step 5: Solve for x
   x = 4,429,168,704/31,116
6. Step 6: Final answer
   x = 142,343.77