Finding the Third Proportional to 866,111,806 and 1,778,138,830

Step by Step Solution

1. Step 1: Write the proportion equation
   866,111,806 : 1,778,138,830 = 1,778,138,830 : x
2. Step 2: Convert to fraction form
   866,111,806/1,778,138,830 = 1,778,138,830/x
3. Step 3: Cross multiply
   866,111,806x = 1,778,138,830 × 1,778,138,830
4. Step 4: Simplify right side
   866,111,806x = 3,161,777,698,753,768,960
5. Step 5: Solve for x
   x = 3,161,777,698,753,768,960/866,111,806
6. Step 6: Final answer
   x = 3,650,542,201.19