Finding the Third Proportional to 1,971,900 and 4,242,696

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971,900 : 4,242,696 = 4,242,696 : x
2. Step 2: Convert to fraction form
   1,971,900/4,242,696 = 4,242,696/x
3. Step 3: Cross multiply
   1,971,900x = 4,242,696 × 4,242,696
4. Step 4: Simplify right side
   1,971,900x = 18,000,469,348,416
5. Step 5: Solve for x
   x = 18,000,469,348,416/1,971,900
6. Step 6: Final answer
   x = 9,128,489.96