Finding the Third Proportional to 1,287,430 and 1,947,715

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,430 : 1,947,715 = 1,947,715 : x
2. Step 2: Convert to fraction form
   1,287,430/1,947,715 = 1,947,715/x
3. Step 3: Cross multiply
   1,287,430x = 1,947,715 × 1,947,715
4. Step 4: Simplify right side
   1,287,430x = 3,793,593,721,225
5. Step 5: Solve for x
   x = 3,793,593,721,225/1,287,430
6. Step 6: Final answer
   x = 2,946,640.77