Finding the Third Proportional to 5,981,378 and 13,120,764

Step by Step Solution

1. Step 1: Write the proportion equation
   5,981,378 : 13,120,764 = 13,120,764 : x
2. Step 2: Convert to fraction form
   5,981,378/13,120,764 = 13,120,764/x
3. Step 3: Cross multiply
   5,981,378x = 13,120,764 × 13,120,764
4. Step 4: Simplify right side
   5,981,378x = 172,154,447,943,696
5. Step 5: Solve for x
   x = 172,154,447,943,696/5,981,378
6. Step 6: Final answer
   x = 28,781,736.91