Finding the Third Proportional to 687,071.25 and 1,465,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   687,071.25 : 1,465,436.25 = 1,465,436.25 : x
2. Step 2: Convert to fraction form
   687,071.25/1,465,436.25 = 1,465,436.25/x
3. Step 3: Cross multiply
   687,071.25x = 1,465,436.25 × 1,465,436.25
4. Step 4: Simplify right side
   687,071.25x = 2,147,503,402,814.06
5. Step 5: Solve for x
   x = 2,147,503,402,814.06/687,071.25
6. Step 6: Final answer
   x = 3,125,590.55