Finding the Third Proportional to 336,834 and 508,741.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,834 : 508,741.50 = 508,741.50 : x
2. Step 2: Convert to fraction form
   336,834/508,741.50 = 508,741.50/x
3. Step 3: Cross multiply
   336,834x = 508,741.50 × 508,741.50
4. Step 4: Simplify right side
   336,834x = 258,817,913,822.25
5. Step 5: Solve for x
   x = 258,817,913,822.25/336,834
6. Step 6: Final answer
   x = 768,384.17