Finding the Third Proportional to 128,617.50 and 183,468

Step by Step Solution

1. Step 1: Write the proportion equation
   128,617.50 : 183,468 = 183,468 : x
2. Step 2: Convert to fraction form
   128,617.50/183,468 = 183,468/x
3. Step 3: Cross multiply
   128,617.50x = 183,468 × 183,468
4. Step 4: Simplify right side
   128,617.50x = 33,660,507,024
5. Step 5: Solve for x
   x = 33,660,507,024/128,617.50
6. Step 6: Final answer
   x = 261,710.16