Finding the Third Proportional to 9,702,320 and 19,689,738

Step by Step Solution

1. Step 1: Write the proportion equation
   9,702,320 : 19,689,738 = 19,689,738 : x
2. Step 2: Convert to fraction form
   9,702,320/19,689,738 = 19,689,738/x
3. Step 3: Cross multiply
   9,702,320x = 19,689,738 × 19,689,738
4. Step 4: Simplify right side
   9,702,320x = 387,685,782,508,644
5. Step 5: Solve for x
   x = 387,685,782,508,644/9,702,320
6. Step 6: Final answer
   x = 39,958,049.47