Finding the Third Proportional to 31,887 and 69,518

Step by Step Solution

1. Step 1: Write the proportion equation
   31,887 : 69,518 = 69,518 : x
2. Step 2: Convert to fraction form
   31,887/69,518 = 69,518/x
3. Step 3: Cross multiply
   31,887x = 69,518 × 69,518
4. Step 4: Simplify right side
   31,887x = 4,832,752,324
5. Step 5: Solve for x
   x = 4,832,752,324/31,887
6. Step 6: Final answer
   x = 151,558.70