Finding the Third Proportional to 504,369 and 780,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   504,369 : 780,916.50 = 780,916.50 : x
2. Step 2: Convert to fraction form
   504,369/780,916.50 = 780,916.50/x
3. Step 3: Cross multiply
   504,369x = 780,916.50 × 780,916.50
4. Step 4: Simplify right side
   504,369x = 609,830,579,972.25
5. Step 5: Solve for x
   x = 609,830,579,972.25/504,369
6. Step 6: Final answer
   x = 1,209,096.08