Finding the Third Proportional to 4,282,370 and 9,509,380

Step by Step Solution

1. Step 1: Write the proportion equation
   4,282,370 : 9,509,380 = 9,509,380 : x
2. Step 2: Convert to fraction form
   4,282,370/9,509,380 = 9,509,380/x
3. Step 3: Cross multiply
   4,282,370x = 9,509,380 × 9,509,380
4. Step 4: Simplify right side
   4,282,370x = 90,428,307,984,400
5. Step 5: Solve for x
   x = 90,428,307,984,400/4,282,370
6. Step 6: Final answer
   x = 21,116,416.37