Finding the Third Proportional to 66,123.42 and 99,333.42

Step by Step Solution

1. Step 1: Write the proportion equation
   66,123.42 : 99,333.42 = 99,333.42 : x
2. Step 2: Convert to fraction form
   66,123.42/99,333.42 = 99,333.42/x
3. Step 3: Cross multiply
   66,123.42x = 99,333.42 × 99,333.42
4. Step 4: Simplify right side
   66,123.42x = 9,867,128,701.40
5. Step 5: Solve for x
   x = 9,867,128,701.40/66,123.42
6. Step 6: Final answer
   x = 149,222.90