Finding the Third Proportional to 6,315,554 and 13,890,820

Step by Step Solution

1. Step 1: Write the proportion equation
   6,315,554 : 13,890,820 = 13,890,820 : x
2. Step 2: Convert to fraction form
   6,315,554/13,890,820 = 13,890,820/x
3. Step 3: Cross multiply
   6,315,554x = 13,890,820 × 13,890,820
4. Step 4: Simplify right side
   6,315,554x = 192,954,880,272,400
5. Step 5: Solve for x
   x = 192,954,880,272,400/6,315,554
6. Step 6: Final answer
   x = 30,552,328.47