Finding the Third Proportional to 64,654.50 and 99,858

Step by Step Solution

1. Step 1: Write the proportion equation
   64,654.50 : 99,858 = 99,858 : x
2. Step 2: Convert to fraction form
   64,654.50/99,858 = 99,858/x
3. Step 3: Cross multiply
   64,654.50x = 99,858 × 99,858
4. Step 4: Simplify right side
   64,654.50x = 9,971,620,164
5. Step 5: Solve for x
   x = 9,971,620,164/64,654.50
6. Step 6: Final answer
   x = 154,229.33