Finding the Third Proportional to 68,412 and 109,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,412 : 109,285.50 = 109,285.50 : x
2. Step 2: Convert to fraction form
   68,412/109,285.50 = 109,285.50/x
3. Step 3: Cross multiply
   68,412x = 109,285.50 × 109,285.50
4. Step 4: Simplify right side
   68,412x = 11,943,320,510.25
5. Step 5: Solve for x
   x = 11,943,320,510.25/68,412
6. Step 6: Final answer
   x = 174,579.32