Finding the Third Proportional to 8,947,120.78 and 19,488,513.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,947,120.78 : 19,488,513.94 = 19,488,513.94 : x
2. Step 2: Convert to fraction form
   8,947,120.78/19,488,513.94 = 19,488,513.94/x
3. Step 3: Cross multiply
   8,947,120.78x = 19,488,513.94 × 19,488,513.94
4. Step 4: Simplify right side
   8,947,120.78x = 379,802,175,492,131.75
5. Step 5: Solve for x
   x = 379,802,175,492,131.75/8,947,120.78
6. Step 6: Final answer
   x = 42,449,653.33