Finding the Third Proportional to 1,209,753,826 and 1,868,356,108

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,753,826 : 1,868,356,108 = 1,868,356,108 : x
2. Step 2: Convert to fraction form
   1,209,753,826/1,868,356,108 = 1,868,356,108/x
3. Step 3: Cross multiply
   1,209,753,826x = 1,868,356,108 × 1,868,356,108
4. Step 4: Simplify right side
   1,209,753,826x = 3,490,754,546,300,907,520
5. Step 5: Solve for x
   x = 3,490,754,546,300,907,520/1,209,753,826
6. Step 6: Final answer
   x = 2,885,508,168.09