Finding the Third Proportional to 778,765.50 and 1,047,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   778,765.50 : 1,047,631.50 = 1,047,631.50 : x
2. Step 2: Convert to fraction form
   778,765.50/1,047,631.50 = 1,047,631.50/x
3. Step 3: Cross multiply
   778,765.50x = 1,047,631.50 × 1,047,631.50
4. Step 4: Simplify right side
   778,765.50x = 1,097,531,759,792.25
5. Step 5: Solve for x
   x = 1,097,531,759,792.25/778,765.50
6. Step 6: Final answer
   x = 1,409,322.52