Finding the Third Proportional to 4,207,124 and 9,210,304

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,124 : 9,210,304 = 9,210,304 : x
2. Step 2: Convert to fraction form
   4,207,124/9,210,304 = 9,210,304/x
3. Step 3: Cross multiply
   4,207,124x = 9,210,304 × 9,210,304
4. Step 4: Simplify right side
   4,207,124x = 84,829,699,772,416
5. Step 5: Solve for x
   x = 84,829,699,772,416/4,207,124
6. Step 6: Final answer
   x = 20,163,346.69