Finding the Third Proportional to 211,196 and 429,726

Step by Step Solution

1. Step 1: Write the proportion equation
   211,196 : 429,726 = 429,726 : x
2. Step 2: Convert to fraction form
   211,196/429,726 = 429,726/x
3. Step 3: Cross multiply
   211,196x = 429,726 × 429,726
4. Step 4: Simplify right side
   211,196x = 184,664,435,076
5. Step 5: Solve for x
   x = 184,664,435,076/211,196
6. Step 6: Final answer
   x = 874,374.68