Finding the Third Proportional to 598,402 and 1,290,116

Step by Step Solution

1. Step 1: Write the proportion equation
   598,402 : 1,290,116 = 1,290,116 : x
2. Step 2: Convert to fraction form
   598,402/1,290,116 = 1,290,116/x
3. Step 3: Cross multiply
   598,402x = 1,290,116 × 1,290,116
4. Step 4: Simplify right side
   598,402x = 1,664,399,293,456
5. Step 5: Solve for x
   x = 1,664,399,293,456/598,402
6. Step 6: Final answer
   x = 2,781,406.64