Finding the Third Proportional to 866,111,789.39 and 1,778,138,795.18

Step by Step Solution

1. Step 1: Write the proportion equation
   866,111,789.39 : 1,778,138,795.18 = 1,778,138,795.18 : x
2. Step 2: Convert to fraction form
   866,111,789.39/1,778,138,795.18 = 1,778,138,795.18/x
3. Step 3: Cross multiply
   866,111,789.39x = 1,778,138,795.18 × 1,778,138,795.18
4. Step 4: Simplify right side
   866,111,789.39x = 3,161,777,574,923,470,848
5. Step 5: Solve for x
   x = 3,161,777,574,923,470,848/866,111,789.39
6. Step 6: Final answer
   x = 3,650,542,128.23