Finding the Third Proportional to 390,528 and 846,180

Step by Step Solution

1. Step 1: Write the proportion equation
   390,528 : 846,180 = 846,180 : x
2. Step 2: Convert to fraction form
   390,528/846,180 = 846,180/x
3. Step 3: Cross multiply
   390,528x = 846,180 × 846,180
4. Step 4: Simplify right side
   390,528x = 716,020,592,400
5. Step 5: Solve for x
   x = 716,020,592,400/390,528
6. Step 6: Final answer
   x = 1,833,468.00