Finding the Third Proportional to 429,731 and 910,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,731 : 910,686.50 = 910,686.50 : x
2. Step 2: Convert to fraction form
   429,731/910,686.50 = 910,686.50/x
3. Step 3: Cross multiply
   429,731x = 910,686.50 × 910,686.50
4. Step 4: Simplify right side
   429,731x = 829,349,901,282.25
5. Step 5: Solve for x
   x = 829,349,901,282.25/429,731
6. Step 6: Final answer
   x = 1,929,928.03