Finding the Third Proportional to 9,173,020 and 21,420,550

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173,020 : 21,420,550 = 21,420,550 : x
2. Step 2: Convert to fraction form
   9,173,020/21,420,550 = 21,420,550/x
3. Step 3: Cross multiply
   9,173,020x = 21,420,550 × 21,420,550
4. Step 4: Simplify right side
   9,173,020x = 458,839,962,302,500
5. Step 5: Solve for x
   x = 458,839,962,302,500/9,173,020
6. Step 6: Final answer
   x = 50,020,599.79