Finding the Third Proportional to 6,287,978 and 13,472,354

Step by Step Solution

1. Step 1: Write the proportion equation
   6,287,978 : 13,472,354 = 13,472,354 : x
2. Step 2: Convert to fraction form
   6,287,978/13,472,354 = 13,472,354/x
3. Step 3: Cross multiply
   6,287,978x = 13,472,354 × 13,472,354
4. Step 4: Simplify right side
   6,287,978x = 181,504,322,301,316
5. Step 5: Solve for x
   x = 181,504,322,301,316/6,287,978
6. Step 6: Final answer
   x = 28,865,292.20