Finding the Third Proportional to 42,697.50 and 68,210.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,697.50 : 68,210.25 = 68,210.25 : x
2. Step 2: Convert to fraction form
   42,697.50/68,210.25 = 68,210.25/x
3. Step 3: Cross multiply
   42,697.50x = 68,210.25 × 68,210.25
4. Step 4: Simplify right side
   42,697.50x = 4,652,638,205.06
5. Step 5: Solve for x
   x = 4,652,638,205.06/42,697.50
6. Step 6: Final answer
   x = 108,967.46