Finding the Third Proportional to 406,802.50 and 874,827.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,802.50 : 874,827.50 = 874,827.50 : x
2. Step 2: Convert to fraction form
   406,802.50/874,827.50 = 874,827.50/x
3. Step 3: Cross multiply
   406,802.50x = 874,827.50 × 874,827.50
4. Step 4: Simplify right side
   406,802.50x = 765,323,154,756.25
5. Step 5: Solve for x
   x = 765,323,154,756.25/406,802.50
6. Step 6: Final answer
   x = 1,881,313.79