Finding the Third Proportional to 1,278,702 and 1,909,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,702 : 1,909,300.50 = 1,909,300.50 : x
2. Step 2: Convert to fraction form
   1,278,702/1,909,300.50 = 1,909,300.50/x
3. Step 3: Cross multiply
   1,278,702x = 1,909,300.50 × 1,909,300.50
4. Step 4: Simplify right side
   1,278,702x = 3,645,428,399,300.25
5. Step 5: Solve for x
   x = 3,645,428,399,300.25/1,278,702
6. Step 6: Final answer
   x = 2,850,881.91