Finding the Third Proportional to 403,059 and 609,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,059 : 609,124.50 = 609,124.50 : x
2. Step 2: Convert to fraction form
   403,059/609,124.50 = 609,124.50/x
3. Step 3: Cross multiply
   403,059x = 609,124.50 × 609,124.50
4. Step 4: Simplify right side
   403,059x = 371,032,656,500.25
5. Step 5: Solve for x
   x = 371,032,656,500.25/403,059
6. Step 6: Final answer
   x = 920,541.80