Finding the Third Proportional to 729,274 and 1,590,128

Step by Step Solution

1. Step 1: Write the proportion equation
   729,274 : 1,590,128 = 1,590,128 : x
2. Step 2: Convert to fraction form
   729,274/1,590,128 = 1,590,128/x
3. Step 3: Cross multiply
   729,274x = 1,590,128 × 1,590,128
4. Step 4: Simplify right side
   729,274x = 2,528,507,056,384
5. Step 5: Solve for x
   x = 2,528,507,056,384/729,274
6. Step 6: Final answer
   x = 3,467,156.45