Finding the Third Proportional to 870,932 and 1,866,280

Step by Step Solution

1. Step 1: Write the proportion equation
   870,932 : 1,866,280 = 1,866,280 : x
2. Step 2: Convert to fraction form
   870,932/1,866,280 = 1,866,280/x
3. Step 3: Cross multiply
   870,932x = 1,866,280 × 1,866,280
4. Step 4: Simplify right side
   870,932x = 3,483,001,038,400
5. Step 5: Solve for x
   x = 3,483,001,038,400/870,932
6. Step 6: Final answer
   x = 3,999,165.31