Finding the Third Proportional to 9,985,908 and 21,510,006

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985,908 : 21,510,006 = 21,510,006 : x
2. Step 2: Convert to fraction form
   9,985,908/21,510,006 = 21,510,006/x
3. Step 3: Cross multiply
   9,985,908x = 21,510,006 × 21,510,006
4. Step 4: Simplify right side
   9,985,908x = 462,680,358,120,036
5. Step 5: Solve for x
   x = 462,680,358,120,036/9,985,908
6. Step 6: Final answer
   x = 46,333,328.74