Finding the Third Proportional to 42,796.78 and 66,531.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,796.78 : 66,531.23 = 66,531.23 : x
2. Step 2: Convert to fraction form
   42,796.78/66,531.23 = 66,531.23/x
3. Step 3: Cross multiply
   42,796.78x = 66,531.23 × 66,531.23
4. Step 4: Simplify right side
   42,796.78x = 4,426,405,147.46
5. Step 5: Solve for x
   x = 4,426,405,147.46/42,796.78
6. Step 6: Final answer
   x = 103,428.46