Finding the Third Proportional to 1,388,248 and 2,815,136

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,248 : 2,815,136 = 2,815,136 : x
2. Step 2: Convert to fraction form
   1,388,248/2,815,136 = 2,815,136/x
3. Step 3: Cross multiply
   1,388,248x = 2,815,136 × 2,815,136
4. Step 4: Simplify right side
   1,388,248x = 7,924,990,698,496
5. Step 5: Solve for x
   x = 7,924,990,698,496/1,388,248
6. Step 6: Final answer
   x = 5,708,627.49