Finding the Third Proportional to 851,788 and 1,876,409

Step by Step Solution

1. Step 1: Write the proportion equation
   851,788 : 1,876,409 = 1,876,409 : x
2. Step 2: Convert to fraction form
   851,788/1,876,409 = 1,876,409/x
3. Step 3: Cross multiply
   851,788x = 1,876,409 × 1,876,409
4. Step 4: Simplify right side
   851,788x = 3,520,910,735,281
5. Step 5: Solve for x
   x = 3,520,910,735,281/851,788
6. Step 6: Final answer
   x = 4,133,552.87