Finding the Third Proportional to 45,381.50 and 66,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,381.50 : 66,659.50 = 66,659.50 : x
2. Step 2: Convert to fraction form
   45,381.50/66,659.50 = 66,659.50/x
3. Step 3: Cross multiply
   45,381.50x = 66,659.50 × 66,659.50
4. Step 4: Simplify right side
   45,381.50x = 4,443,488,940.25
5. Step 5: Solve for x
   x = 4,443,488,940.25/45,381.50
6. Step 6: Final answer
   x = 97,914.10