Finding the Third Proportional to 19,150,554 and 28,657,978

Step by Step Solution

1. Step 1: Write the proportion equation
   19,150,554 : 28,657,978 = 28,657,978 : x
2. Step 2: Convert to fraction form
   19,150,554/28,657,978 = 28,657,978/x
3. Step 3: Cross multiply
   19,150,554x = 28,657,978 × 28,657,978
4. Step 4: Simplify right side
   19,150,554x = 821,279,703,048,484
5. Step 5: Solve for x
   x = 821,279,703,048,484/19,150,554
6. Step 6: Final answer
   x = 42,885,427.91