Finding the Third Proportional to 90,619.50 and 187,611

Step by Step Solution

1. Step 1: Write the proportion equation
   90,619.50 : 187,611 = 187,611 : x
2. Step 2: Convert to fraction form
   90,619.50/187,611 = 187,611/x
3. Step 3: Cross multiply
   90,619.50x = 187,611 × 187,611
4. Step 4: Simplify right side
   90,619.50x = 35,197,887,321
5. Step 5: Solve for x
   x = 35,197,887,321/90,619.50
6. Step 6: Final answer
   x = 388,414.05