Finding the Third Proportional to 9,702,312 and 19,689,732

Step by Step Solution

1. Step 1: Write the proportion equation
   9,702,312 : 19,689,732 = 19,689,732 : x
2. Step 2: Convert to fraction form
   9,702,312/19,689,732 = 19,689,732/x
3. Step 3: Cross multiply
   9,702,312x = 19,689,732 × 19,689,732
4. Step 4: Simplify right side
   9,702,312x = 387,685,546,231,824
5. Step 5: Solve for x
   x = 387,685,546,231,824/9,702,312
6. Step 6: Final answer
   x = 39,958,058.06