Finding the Third Proportional to 6,978,880 and 10,503,264

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978,880 : 10,503,264 = 10,503,264 : x
2. Step 2: Convert to fraction form
   6,978,880/10,503,264 = 10,503,264/x
3. Step 3: Cross multiply
   6,978,880x = 10,503,264 × 10,503,264
4. Step 4: Simplify right side
   6,978,880x = 110,318,554,653,696
5. Step 5: Solve for x
   x = 110,318,554,653,696/6,978,880
6. Step 6: Final answer
   x = 15,807,486.97