Finding the Third Proportional to 89,312.50 and 123,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,312.50 : 123,031.50 = 123,031.50 : x
2. Step 2: Convert to fraction form
   89,312.50/123,031.50 = 123,031.50/x
3. Step 3: Cross multiply
   89,312.50x = 123,031.50 × 123,031.50
4. Step 4: Simplify right side
   89,312.50x = 15,136,749,992.25
5. Step 5: Solve for x
   x = 15,136,749,992.25/89,312.50
6. Step 6: Final answer
   x = 169,480.76