Finding the Third Proportional to 518,429 and 846,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   518,429 : 846,547.50 = 846,547.50 : x
2. Step 2: Convert to fraction form
   518,429/846,547.50 = 846,547.50/x
3. Step 3: Cross multiply
   518,429x = 846,547.50 × 846,547.50
4. Step 4: Simplify right side
   518,429x = 716,642,669,756.25
5. Step 5: Solve for x
   x = 716,642,669,756.25/518,429
6. Step 6: Final answer
   x = 1,382,335.23