Finding the Third Proportional to 118,449 and 153,679.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,449 : 153,679.50 = 153,679.50 : x
2. Step 2: Convert to fraction form
   118,449/153,679.50 = 153,679.50/x
3. Step 3: Cross multiply
   118,449x = 153,679.50 × 153,679.50
4. Step 4: Simplify right side
   118,449x = 23,617,388,720.25
5. Step 5: Solve for x
   x = 23,617,388,720.25/118,449
6. Step 6: Final answer
   x = 199,388.67