Finding the Third Proportional to 31,494 and 69,131

Step by Step Solution

1. Step 1: Write the proportion equation
   31,494 : 69,131 = 69,131 : x
2. Step 2: Convert to fraction form
   31,494/69,131 = 69,131/x
3. Step 3: Cross multiply
   31,494x = 69,131 × 69,131
4. Step 4: Simplify right side
   31,494x = 4,779,095,161
5. Step 5: Solve for x
   x = 4,779,095,161/31,494
6. Step 6: Final answer
   x = 151,746.21