Finding the Third Proportional to 421,114.50 and 913,173

Step by Step Solution

1. Step 1: Write the proportion equation
   421,114.50 : 913,173 = 913,173 : x
2. Step 2: Convert to fraction form
   421,114.50/913,173 = 913,173/x
3. Step 3: Cross multiply
   421,114.50x = 913,173 × 913,173
4. Step 4: Simplify right side
   421,114.50x = 833,884,927,929
5. Step 5: Solve for x
   x = 833,884,927,929/421,114.50
6. Step 6: Final answer
   x = 1,980,185.74