Finding the Third Proportional to 120,643.50 and 187,859.25

Step by Step Solution

1. Step 1: Write the proportion equation
   120,643.50 : 187,859.25 = 187,859.25 : x
2. Step 2: Convert to fraction form
   120,643.50/187,859.25 = 187,859.25/x
3. Step 3: Cross multiply
   120,643.50x = 187,859.25 × 187,859.25
4. Step 4: Simplify right side
   120,643.50x = 35,291,097,810.56
5. Step 5: Solve for x
   x = 35,291,097,810.56/120,643.50
6. Step 6: Final answer
   x = 292,523.82