Finding the Third Proportional to 29,688.19 and 68,659.31

Step by Step Solution

1. Step 1: Write the proportion equation
   29,688.19 : 68,659.31 = 68,659.31 : x
2. Step 2: Convert to fraction form
   29,688.19/68,659.31 = 68,659.31/x
3. Step 3: Cross multiply
   29,688.19x = 68,659.31 × 68,659.31
4. Step 4: Simplify right side
   29,688.19x = 4,714,101,192.97
5. Step 5: Solve for x
   x = 4,714,101,192.97/29,688.19
6. Step 6: Final answer
   x = 158,787.10