Finding the Third Proportional to 385,803 and 846,308.25

Step by Step Solution

1. Step 1: Write the proportion equation
   385,803 : 846,308.25 = 846,308.25 : x
2. Step 2: Convert to fraction form
   385,803/846,308.25 = 846,308.25/x
3. Step 3: Cross multiply
   385,803x = 846,308.25 × 846,308.25
4. Step 4: Simplify right side
   385,803x = 716,237,654,018.06
5. Step 5: Solve for x
   x = 716,237,654,018.06/385,803
6. Step 6: Final answer
   x = 1,856,485.44