Finding the Third Proportional to 358,048.50 and 780,006

Step by Step Solution

1. Step 1: Write the proportion equation
   358,048.50 : 780,006 = 780,006 : x
2. Step 2: Convert to fraction form
   358,048.50/780,006 = 780,006/x
3. Step 3: Cross multiply
   358,048.50x = 780,006 × 780,006
4. Step 4: Simplify right side
   358,048.50x = 608,409,360,036
5. Step 5: Solve for x
   x = 608,409,360,036/358,048.50
6. Step 6: Final answer
   x = 1,699,237.28