Finding the Third Proportional to 712,648 and 1,045,640

Step by Step Solution

1. Step 1: Write the proportion equation
   712,648 : 1,045,640 = 1,045,640 : x
2. Step 2: Convert to fraction form
   712,648/1,045,640 = 1,045,640/x
3. Step 3: Cross multiply
   712,648x = 1,045,640 × 1,045,640
4. Step 4: Simplify right side
   712,648x = 1,093,363,009,600
5. Step 5: Solve for x
   x = 1,093,363,009,600/712,648
6. Step 6: Final answer
   x = 1,534,225.89