Finding the Third Proportional to 9,685,728 and 20,375,298

Step by Step Solution

1. Step 1: Write the proportion equation
   9,685,728 : 20,375,298 = 20,375,298 : x
2. Step 2: Convert to fraction form
   9,685,728/20,375,298 = 20,375,298/x
3. Step 3: Cross multiply
   9,685,728x = 20,375,298 × 20,375,298
4. Step 4: Simplify right side
   9,685,728x = 415,152,768,588,804
5. Step 5: Solve for x
   x = 415,152,768,588,804/9,685,728
6. Step 6: Final answer
   x = 42,862,319.55