Finding the Third Proportional to 374,685 and 507,898.50

Step by Step Solution

1. Step 1: Write the proportion equation
   374,685 : 507,898.50 = 507,898.50 : x
2. Step 2: Convert to fraction form
   374,685/507,898.50 = 507,898.50/x
3. Step 3: Cross multiply
   374,685x = 507,898.50 × 507,898.50
4. Step 4: Simplify right side
   374,685x = 257,960,886,302.25
5. Step 5: Solve for x
   x = 257,960,886,302.25/374,685
6. Step 6: Final answer
   x = 688,474.01