Finding the Third Proportional to 421,329 and 909,994.50

Step by Step Solution

1. Step 1: Write the proportion equation
   421,329 : 909,994.50 = 909,994.50 : x
2. Step 2: Convert to fraction form
   421,329/909,994.50 = 909,994.50/x
3. Step 3: Cross multiply
   421,329x = 909,994.50 × 909,994.50
4. Step 4: Simplify right side
   421,329x = 828,089,990,030.25
5. Step 5: Solve for x
   x = 828,089,990,030.25/421,329
6. Step 6: Final answer
   x = 1,965,423.67