Finding the Third Proportional to 42,926 and 66,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,926 : 66,545.50 = 66,545.50 : x
2. Step 2: Convert to fraction form
   42,926/66,545.50 = 66,545.50/x
3. Step 3: Cross multiply
   42,926x = 66,545.50 × 66,545.50
4. Step 4: Simplify right side
   42,926x = 4,428,303,570.25
5. Step 5: Solve for x
   x = 4,428,303,570.25/42,926
6. Step 6: Final answer
   x = 103,161.34