Finding the Third Proportional to 42,355 and 68,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,355 : 68,112.50 = 68,112.50 : x
2. Step 2: Convert to fraction form
   42,355/68,112.50 = 68,112.50/x
3. Step 3: Cross multiply
   42,355x = 68,112.50 × 68,112.50
4. Step 4: Simplify right side
   42,355x = 4,639,312,656.25
5. Step 5: Solve for x
   x = 4,639,312,656.25/42,355
6. Step 6: Final answer
   x = 109,534.00