Finding the Third Proportional to 708,912 and 1,058,737.50

Step by Step Solution

1. Step 1: Write the proportion equation
   708,912 : 1,058,737.50 = 1,058,737.50 : x
2. Step 2: Convert to fraction form
   708,912/1,058,737.50 = 1,058,737.50/x
3. Step 3: Cross multiply
   708,912x = 1,058,737.50 × 1,058,737.50
4. Step 4: Simplify right side
   708,912x = 1,120,925,093,906.25
5. Step 5: Solve for x
   x = 1,120,925,093,906.25/708,912
6. Step 6: Final answer
   x = 1,581,190.75