Finding the Third Proportional to 290,871 and 606,649.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,871 : 606,649.50 = 606,649.50 : x
2. Step 2: Convert to fraction form
   290,871/606,649.50 = 606,649.50/x
3. Step 3: Cross multiply
   290,871x = 606,649.50 × 606,649.50
4. Step 4: Simplify right side
   290,871x = 368,023,615,850.25
5. Step 5: Solve for x
   x = 368,023,615,850.25/290,871
6. Step 6: Final answer
   x = 1,265,246.85