Finding the Third Proportional to 9,389,530 and 20,572,402

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389,530 : 20,572,402 = 20,572,402 : x
2. Step 2: Convert to fraction form
   9,389,530/20,572,402 = 20,572,402/x
3. Step 3: Cross multiply
   9,389,530x = 20,572,402 × 20,572,402
4. Step 4: Simplify right side
   9,389,530x = 423,223,724,049,604
5. Step 5: Solve for x
   x = 423,223,724,049,604/9,389,530
6. Step 6: Final answer
   x = 45,074,005.20