Finding the Third Proportional to 31,881.09 and 69,804.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,881.09 : 69,804.28 = 69,804.28 : x
2. Step 2: Convert to fraction form
   31,881.09/69,804.28 = 69,804.28/x
3. Step 3: Cross multiply
   31,881.09x = 69,804.28 × 69,804.28
4. Step 4: Simplify right side
   31,881.09x = 4,872,637,680.83
5. Step 5: Solve for x
   x = 4,872,637,680.83/31,881.09
6. Step 6: Final answer
   x = 152,837.85