Finding the Third Proportional to 300,507.50 and 429,698

Step by Step Solution

1. Step 1: Write the proportion equation
   300,507.50 : 429,698 = 429,698 : x
2. Step 2: Convert to fraction form
   300,507.50/429,698 = 429,698/x
3. Step 3: Cross multiply
   300,507.50x = 429,698 × 429,698
4. Step 4: Simplify right side
   300,507.50x = 184,640,371,204
5. Step 5: Solve for x
   x = 184,640,371,204/300,507.50
6. Step 6: Final answer
   x = 614,428.50