Finding the Third Proportional to 210,962 and 429,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,962 : 429,757.50 = 429,757.50 : x
2. Step 2: Convert to fraction form
   210,962/429,757.50 = 429,757.50/x
3. Step 3: Cross multiply
   210,962x = 429,757.50 × 429,757.50
4. Step 4: Simplify right side
   210,962x = 184,691,508,806.25
5. Step 5: Solve for x
   x = 184,691,508,806.25/210,962
6. Step 6: Final answer
   x = 875,472.88