Finding the Third Proportional to 31,068 and 69,158

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068 : 69,158 = 69,158 : x
2. Step 2: Convert to fraction form
   31,068/69,158 = 69,158/x
3. Step 3: Cross multiply
   31,068x = 69,158 × 69,158
4. Step 4: Simplify right side
   31,068x = 4,782,828,964
5. Step 5: Solve for x
   x = 4,782,828,964/31,068
6. Step 6: Final answer
   x = 153,947.11