Finding the Third Proportional to 3,902,140 and 8,346,656

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902,140 : 8,346,656 = 8,346,656 : x
2. Step 2: Convert to fraction form
   3,902,140/8,346,656 = 8,346,656/x
3. Step 3: Cross multiply
   3,902,140x = 8,346,656 × 8,346,656
4. Step 4: Simplify right side
   3,902,140x = 69,666,666,382,336
5. Step 5: Solve for x
   x = 69,666,666,382,336/3,902,140
6. Step 6: Final answer
   x = 17,853,451.28