Finding the Third Proportional to 181,222.50 and 392,310

Step by Step Solution

1. Step 1: Write the proportion equation
   181,222.50 : 392,310 = 392,310 : x
2. Step 2: Convert to fraction form
   181,222.50/392,310 = 392,310/x
3. Step 3: Cross multiply
   181,222.50x = 392,310 × 392,310
4. Step 4: Simplify right side
   181,222.50x = 153,907,136,100
5. Step 5: Solve for x
   x = 153,907,136,100/181,222.50
6. Step 6: Final answer
   x = 849,271.67