Finding the Third Proportional to 810,470 and 1,876,090

Step by Step Solution

1. Step 1: Write the proportion equation
   810,470 : 1,876,090 = 1,876,090 : x
2. Step 2: Convert to fraction form
   810,470/1,876,090 = 1,876,090/x
3. Step 3: Cross multiply
   810,470x = 1,876,090 × 1,876,090
4. Step 4: Simplify right side
   810,470x = 3,519,713,688,100
5. Step 5: Solve for x
   x = 3,519,713,688,100/810,470
6. Step 6: Final answer
   x = 4,342,805.64