Finding the Third Proportional to 689,465.25 and 1,139,447.25

Step by Step Solution

1. Step 1: Write the proportion equation
   689,465.25 : 1,139,447.25 = 1,139,447.25 : x
2. Step 2: Convert to fraction form
   689,465.25/1,139,447.25 = 1,139,447.25/x
3. Step 3: Cross multiply
   689,465.25x = 1,139,447.25 × 1,139,447.25
4. Step 4: Simplify right side
   689,465.25x = 1,298,340,035,532.56
5. Step 5: Solve for x
   x = 1,298,340,035,532.56/689,465.25
6. Step 6: Final answer
   x = 1,883,111.64