Finding the Third Proportional to 4,207,282 and 9,215,432

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,282 : 9,215,432 = 9,215,432 : x
2. Step 2: Convert to fraction form
   4,207,282/9,215,432 = 9,215,432/x
3. Step 3: Cross multiply
   4,207,282x = 9,215,432 × 9,215,432
4. Step 4: Simplify right side
   4,207,282x = 84,924,186,946,624
5. Step 5: Solve for x
   x = 84,924,186,946,624/4,207,282
6. Step 6: Final answer
   x = 20,185,047.48