Finding the Third Proportional to 370,667.25 and 813,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   370,667.25 : 813,505.50 = 813,505.50 : x
2. Step 2: Convert to fraction form
   370,667.25/813,505.50 = 813,505.50/x
3. Step 3: Cross multiply
   370,667.25x = 813,505.50 × 813,505.50
4. Step 4: Simplify right side
   370,667.25x = 661,791,198,530.25
5. Step 5: Solve for x
   x = 661,791,198,530.25/370,667.25
6. Step 6: Final answer
   x = 1,785,405.10