Finding the Third Proportional to 122,611.50 and 187,479

Step by Step Solution

1. Step 1: Write the proportion equation
   122,611.50 : 187,479 = 187,479 : x
2. Step 2: Convert to fraction form
   122,611.50/187,479 = 187,479/x
3. Step 3: Cross multiply
   122,611.50x = 187,479 × 187,479
4. Step 4: Simplify right side
   122,611.50x = 35,148,375,441
5. Step 5: Solve for x
   x = 35,148,375,441/122,611.50
6. Step 6: Final answer
   x = 286,664.59