Finding the Third Proportional to 728,140 and 1,575,512

Step by Step Solution

1. Step 1: Write the proportion equation
   728,140 : 1,575,512 = 1,575,512 : x
2. Step 2: Convert to fraction form
   728,140/1,575,512 = 1,575,512/x
3. Step 3: Cross multiply
   728,140x = 1,575,512 × 1,575,512
4. Step 4: Simplify right side
   728,140x = 2,482,238,062,144
5. Step 5: Solve for x
   x = 2,482,238,062,144/728,140
6. Step 6: Final answer
   x = 3,409,012.09