Finding the Third Proportional to 99,166.78 and 146,836.55

Step by Step Solution

1. Step 1: Write the proportion equation
   99,166.78 : 146,836.55 = 146,836.55 : x
2. Step 2: Convert to fraction form
   99,166.78/146,836.55 = 146,836.55/x
3. Step 3: Cross multiply
   99,166.78x = 146,836.55 × 146,836.55
4. Step 4: Simplify right side
   99,166.78x = 21,560,971,498.17
5. Step 5: Solve for x
   x = 21,560,971,498.17/99,166.78
6. Step 6: Final answer
   x = 217,421.31