Finding the Third Proportional to 421,751.25 and 910,854

Step by Step Solution

1. Step 1: Write the proportion equation
   421,751.25 : 910,854 = 910,854 : x
2. Step 2: Convert to fraction form
   421,751.25/910,854 = 910,854/x
3. Step 3: Cross multiply
   421,751.25x = 910,854 × 910,854
4. Step 4: Simplify right side
   421,751.25x = 829,655,009,316
5. Step 5: Solve for x
   x = 829,655,009,316/421,751.25
6. Step 6: Final answer
   x = 1,967,166.69