Finding the Third Proportional to 66.31 and 100.63

Step by Step Solution

1. Step 1: Write the proportion equation
   66.31 : 100.63 = 100.63 : x
2. Step 2: Convert to fraction form
   66.31/100.63 = 100.63/x
3. Step 3: Cross multiply
   66.31x = 100.63 × 100.63
4. Step 4: Simplify right side
   66.31x = 10,125.39
5. Step 5: Solve for x
   x = 10,125.39/66.31
6. Step 6: Final answer
   x = 152.69