Finding the Third Proportional to 42,681 and 66,955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,681 : 66,955.50 = 66,955.50 : x
2. Step 2: Convert to fraction form
   42,681/66,955.50 = 66,955.50/x
3. Step 3: Cross multiply
   42,681x = 66,955.50 × 66,955.50
4. Step 4: Simplify right side
   42,681x = 4,483,038,980.25
5. Step 5: Solve for x
   x = 4,483,038,980.25/42,681
6. Step 6: Final answer
   x = 105,035.94