Finding the Third Proportional to 421,767 and 909,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   421,767 : 909,967.50 = 909,967.50 : x
2. Step 2: Convert to fraction form
   421,767/909,967.50 = 909,967.50/x
3. Step 3: Cross multiply
   421,767x = 909,967.50 × 909,967.50
4. Step 4: Simplify right side
   421,767x = 828,040,851,056.25
5. Step 5: Solve for x
   x = 828,040,851,056.25/421,767
6. Step 6: Final answer
   x = 1,963,266.09