Finding the Third Proportional to 66,867.75 and 99,196.88

Step by Step Solution

1. Step 1: Write the proportion equation
   66,867.75 : 99,196.88 = 99,196.88 : x
2. Step 2: Convert to fraction form
   66,867.75/99,196.88 = 99,196.88/x
3. Step 3: Cross multiply
   66,867.75x = 99,196.88 × 99,196.88
4. Step 4: Simplify right side
   66,867.75x = 9,840,020,009.77
5. Step 5: Solve for x
   x = 9,840,020,009.77/66,867.75
6. Step 6: Final answer
   x = 147,156.44