Finding the Third Proportional to 64,662.75 and 99,870.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,662.75 : 99,870.75 = 99,870.75 : x
2. Step 2: Convert to fraction form
   64,662.75/99,870.75 = 99,870.75/x
3. Step 3: Cross multiply
   64,662.75x = 99,870.75 × 99,870.75
4. Step 4: Simplify right side
   64,662.75x = 9,974,166,705.56
5. Step 5: Solve for x
   x = 9,974,166,705.56/64,662.75
6. Step 6: Final answer
   x = 154,249.03