Finding the Third Proportional to 99,772.50 and 154,906.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,772.50 : 154,906.50 = 154,906.50 : x
2. Step 2: Convert to fraction form
   99,772.50/154,906.50 = 154,906.50/x
3. Step 3: Cross multiply
   99,772.50x = 154,906.50 × 154,906.50
4. Step 4: Simplify right side
   99,772.50x = 23,996,023,742.25
5. Step 5: Solve for x
   x = 23,996,023,742.25/99,772.50
6. Step 6: Final answer
   x = 240,507.39