Finding the Third Proportional to 421,852.50 and 910,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   421,852.50 : 910,003.50 = 910,003.50 : x
2. Step 2: Convert to fraction form
   421,852.50/910,003.50 = 910,003.50/x
3. Step 3: Cross multiply
   421,852.50x = 910,003.50 × 910,003.50
4. Step 4: Simplify right side
   421,852.50x = 828,106,370,012.25
5. Step 5: Solve for x
   x = 828,106,370,012.25/421,852.50
6. Step 6: Final answer
   x = 1,963,023.50