Finding the Third Proportional to 9,656,364 and 21,139,557

Step by Step Solution

1. Step 1: Write the proportion equation
   9,656,364 : 21,139,557 = 21,139,557 : x
2. Step 2: Convert to fraction form
   9,656,364/21,139,557 = 21,139,557/x
3. Step 3: Cross multiply
   9,656,364x = 21,139,557 × 21,139,557
4. Step 4: Simplify right side
   9,656,364x = 446,880,870,156,249
5. Step 5: Solve for x
   x = 446,880,870,156,249/9,656,364
6. Step 6: Final answer
   x = 46,278,378.71