Finding the Third Proportional to 428,779.50 and 846,714

Step by Step Solution

1. Step 1: Write the proportion equation
   428,779.50 : 846,714 = 846,714 : x
2. Step 2: Convert to fraction form
   428,779.50/846,714 = 846,714/x
3. Step 3: Cross multiply
   428,779.50x = 846,714 × 846,714
4. Step 4: Simplify right side
   428,779.50x = 716,924,597,796
5. Step 5: Solve for x
   x = 716,924,597,796/428,779.50
6. Step 6: Final answer
   x = 1,672,012.30