Finding the Third Proportional to 429,720.75 and 910,667.81

Step by Step Solution

1. Step 1: Write the proportion equation
   429,720.75 : 910,667.81 = 910,667.81 : x
2. Step 2: Convert to fraction form
   429,720.75/910,667.81 = 910,667.81/x
3. Step 3: Cross multiply
   429,720.75x = 910,667.81 × 910,667.81
4. Step 4: Simplify right side
   429,720.75x = 829,315,864,723.54
5. Step 5: Solve for x
   x = 829,315,864,723.54/429,720.75
6. Step 6: Final answer
   x = 1,929,894.86