Finding the Third Proportional to 99,618 and 148,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,618 : 148,012.50 = 148,012.50 : x
2. Step 2: Convert to fraction form
   99,618/148,012.50 = 148,012.50/x
3. Step 3: Cross multiply
   99,618x = 148,012.50 × 148,012.50
4. Step 4: Simplify right side
   99,618x = 21,907,700,156.25
5. Step 5: Solve for x
   x = 21,907,700,156.25/99,618
6. Step 6: Final answer
   x = 219,917.08