Finding the Third Proportional to 1,186,388 and 2,559,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,388 : 2,559,400 = 2,559,400 : x
2. Step 2: Convert to fraction form
   1,186,388/2,559,400 = 2,559,400/x
3. Step 3: Cross multiply
   1,186,388x = 2,559,400 × 2,559,400
4. Step 4: Simplify right side
   1,186,388x = 6,550,528,360,000
5. Step 5: Solve for x
   x = 6,550,528,360,000/1,186,388
6. Step 6: Final answer
   x = 5,521,404.77