Finding the Third Proportional to 66,955.50 and 91,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,955.50 : 91,810.50 = 91,810.50 : x
2. Step 2: Convert to fraction form
   66,955.50/91,810.50 = 91,810.50/x
3. Step 3: Cross multiply
   66,955.50x = 91,810.50 × 91,810.50
4. Step 4: Simplify right side
   66,955.50x = 8,429,167,910.25
5. Step 5: Solve for x
   x = 8,429,167,910.25/66,955.50
6. Step 6: Final answer
   x = 125,892.09