Finding the Third Proportional to 413,507 and 890,370.50

Step by Step Solution

1. Step 1: Write the proportion equation
   413,507 : 890,370.50 = 890,370.50 : x
2. Step 2: Convert to fraction form
   413,507/890,370.50 = 890,370.50/x
3. Step 3: Cross multiply
   413,507x = 890,370.50 × 890,370.50
4. Step 4: Simplify right side
   413,507x = 792,759,627,270.25
5. Step 5: Solve for x
   x = 792,759,627,270.25/413,507
6. Step 6: Final answer
   x = 1,917,161.32