Finding the Third Proportional to 439,012.50 and 890,136

Step by Step Solution

1. Step 1: Write the proportion equation
   439,012.50 : 890,136 = 890,136 : x
2. Step 2: Convert to fraction form
   439,012.50/890,136 = 890,136/x
3. Step 3: Cross multiply
   439,012.50x = 890,136 × 890,136
4. Step 4: Simplify right side
   439,012.50x = 792,342,098,496
5. Step 5: Solve for x
   x = 792,342,098,496/439,012.50
6. Step 6: Final answer
   x = 1,804,828.11