Finding the Third Proportional to 4,709,628 and 10,172,070

Step by Step Solution

1. Step 1: Write the proportion equation
   4,709,628 : 10,172,070 = 10,172,070 : x
2. Step 2: Convert to fraction form
   4,709,628/10,172,070 = 10,172,070/x
3. Step 3: Cross multiply
   4,709,628x = 10,172,070 × 10,172,070
4. Step 4: Simplify right side
   4,709,628x = 103,471,008,084,900
5. Step 5: Solve for x
   x = 103,471,008,084,900/4,709,628
6. Step 6: Final answer
   x = 21,970,102.12