Finding the Third Proportional to 551,096.50 and 780,015

Step by Step Solution

1. Step 1: Write the proportion equation
   551,096.50 : 780,015 = 780,015 : x
2. Step 2: Convert to fraction form
   551,096.50/780,015 = 780,015/x
3. Step 3: Cross multiply
   551,096.50x = 780,015 × 780,015
4. Step 4: Simplify right side
   551,096.50x = 608,423,400,225
5. Step 5: Solve for x
   x = 608,423,400,225/551,096.50
6. Step 6: Final answer
   x = 1,104,023.34