Finding the Third Proportional to 31,158 and 69,726

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158 : 69,726 = 69,726 : x
2. Step 2: Convert to fraction form
   31,158/69,726 = 69,726/x
3. Step 3: Cross multiply
   31,158x = 69,726 × 69,726
4. Step 4: Simplify right side
   31,158x = 4,861,715,076
5. Step 5: Solve for x
   x = 4,861,715,076/31,158
6. Step 6: Final answer
   x = 156,034.25