Finding the Third Proportional to 619,435.69 and 872,317.69

Step by Step Solution

1. Step 1: Write the proportion equation
   619,435.69 : 872,317.69 = 872,317.69 : x
2. Step 2: Convert to fraction form
   619,435.69/872,317.69 = 872,317.69/x
3. Step 3: Cross multiply
   619,435.69x = 872,317.69 × 872,317.69
4. Step 4: Simplify right side
   619,435.69x = 760,938,147,925.35
5. Step 5: Solve for x
   x = 760,938,147,925.35/619,435.69
6. Step 6: Final answer
   x = 1,228,437.69