Finding the Third Proportional to 496,978.50 and 662,136

Step by Step Solution

1. Step 1: Write the proportion equation
   496,978.50 : 662,136 = 662,136 : x
2. Step 2: Convert to fraction form
   496,978.50/662,136 = 662,136/x
3. Step 3: Cross multiply
   496,978.50x = 662,136 × 662,136
4. Step 4: Simplify right side
   496,978.50x = 438,424,082,496
5. Step 5: Solve for x
   x = 438,424,082,496/496,978.50
6. Step 6: Final answer
   x = 882,179.17