Finding the Third Proportional to 216,321 and 469,146

Step by Step Solution

1. Step 1: Write the proportion equation
   216,321 : 469,146 = 469,146 : x
2. Step 2: Convert to fraction form
   216,321/469,146 = 469,146/x
3. Step 3: Cross multiply
   216,321x = 469,146 × 469,146
4. Step 4: Simplify right side
   216,321x = 220,097,969,316
5. Step 5: Solve for x
   x = 220,097,969,316/216,321
6. Step 6: Final answer
   x = 1,017,460.02