Finding the Third Proportional to 9,624,678 and 21,401,280

Step by Step Solution

1. Step 1: Write the proportion equation
   9,624,678 : 21,401,280 = 21,401,280 : x
2. Step 2: Convert to fraction form
   9,624,678/21,401,280 = 21,401,280/x
3. Step 3: Cross multiply
   9,624,678x = 21,401,280 × 21,401,280
4. Step 4: Simplify right side
   9,624,678x = 458,014,785,638,400
5. Step 5: Solve for x
   x = 458,014,785,638,400/9,624,678
6. Step 6: Final answer
   x = 47,587,543.77