Finding the Third Proportional to 262,921 and 429,283.50

Step by Step Solution

1. Step 1: Write the proportion equation
   262,921 : 429,283.50 = 429,283.50 : x
2. Step 2: Convert to fraction form
   262,921/429,283.50 = 429,283.50/x
3. Step 3: Cross multiply
   262,921x = 429,283.50 × 429,283.50
4. Step 4: Simplify right side
   262,921x = 184,284,323,372.25
5. Step 5: Solve for x
   x = 184,284,323,372.25/262,921
6. Step 6: Final answer
   x = 700,911.39