Finding the Third Proportional to 7,777,792 and 12,173,284

Step by Step Solution

1. Step 1: Write the proportion equation
   7,777,792 : 12,173,284 = 12,173,284 : x
2. Step 2: Convert to fraction form
   7,777,792/12,173,284 = 12,173,284/x
3. Step 3: Cross multiply
   7,777,792x = 12,173,284 × 12,173,284
4. Step 4: Simplify right side
   7,777,792x = 148,188,843,344,656
5. Step 5: Solve for x
   x = 148,188,843,344,656/7,777,792
6. Step 6: Final answer
   x = 19,052,816.45