Finding the Third Proportional to 727,354 and 1,590,139

Step by Step Solution

1. Step 1: Write the proportion equation
   727,354 : 1,590,139 = 1,590,139 : x
2. Step 2: Convert to fraction form
   727,354/1,590,139 = 1,590,139/x
3. Step 3: Cross multiply
   727,354x = 1,590,139 × 1,590,139
4. Step 4: Simplify right side
   727,354x = 2,528,542,039,321
5. Step 5: Solve for x
   x = 2,528,542,039,321/727,354
6. Step 6: Final answer
   x = 3,476,356.82