Finding the Third Proportional to 1,971,870 and 4,242,630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971,870 : 4,242,630 = 4,242,630 : x
2. Step 2: Convert to fraction form
   1,971,870/4,242,630 = 4,242,630/x
3. Step 3: Cross multiply
   1,971,870x = 4,242,630 × 4,242,630
4. Step 4: Simplify right side
   1,971,870x = 17,999,909,316,900
5. Step 5: Solve for x
   x = 17,999,909,316,900/1,971,870
6. Step 6: Final answer
   x = 9,128,344.83