Finding the Third Proportional to 690,588 and 1,509,262

Step by Step Solution

1. Step 1: Write the proportion equation
   690,588 : 1,509,262 = 1,509,262 : x
2. Step 2: Convert to fraction form
   690,588/1,509,262 = 1,509,262/x
3. Step 3: Cross multiply
   690,588x = 1,509,262 × 1,509,262
4. Step 4: Simplify right side
   690,588x = 2,277,871,784,644
5. Step 5: Solve for x
   x = 2,277,871,784,644/690,588
6. Step 6: Final answer
   x = 3,298,452.60