Finding the Third Proportional to 7,782,880 and 12,433,136

Step by Step Solution

1. Step 1: Write the proportion equation
   7,782,880 : 12,433,136 = 12,433,136 : x
2. Step 2: Convert to fraction form
   7,782,880/12,433,136 = 12,433,136/x
3. Step 3: Cross multiply
   7,782,880x = 12,433,136 × 12,433,136
4. Step 4: Simplify right side
   7,782,880x = 154,582,870,794,496
5. Step 5: Solve for x
   x = 154,582,870,794,496/7,782,880
6. Step 6: Final answer
   x = 19,861,911.12