Finding the Third Proportional to 1,966,429 and 4,290,328

Step by Step Solution

1. Step 1: Write the proportion equation
   1,966,429 : 4,290,328 = 4,290,328 : x
2. Step 2: Convert to fraction form
   1,966,429/4,290,328 = 4,290,328/x
3. Step 3: Cross multiply
   1,966,429x = 4,290,328 × 4,290,328
4. Step 4: Simplify right side
   1,966,429x = 18,406,914,347,584
5. Step 5: Solve for x
   x = 18,406,914,347,584/1,966,429
6. Step 6: Final answer
   x = 9,360,579.18