Finding the Third Proportional to 519,920 and 1,139,136

Step by Step Solution

1. Step 1: Write the proportion equation
   519,920 : 1,139,136 = 1,139,136 : x
2. Step 2: Convert to fraction form
   519,920/1,139,136 = 1,139,136/x
3. Step 3: Cross multiply
   519,920x = 1,139,136 × 1,139,136
4. Step 4: Simplify right side
   519,920x = 1,297,630,826,496
5. Step 5: Solve for x
   x = 1,297,630,826,496/519,920
6. Step 6: Final answer
   x = 2,495,827.87