Finding the Third Proportional to 222,071.63 and 316,499.91

Step by Step Solution

1. Step 1: Write the proportion equation
   222,071.63 : 316,499.91 = 316,499.91 : x
2. Step 2: Convert to fraction form
   222,071.63/316,499.91 = 316,499.91/x
3. Step 3: Cross multiply
   222,071.63x = 316,499.91 × 316,499.91
4. Step 4: Simplify right side
   222,071.63x = 100,172,190,656.26
5. Step 5: Solve for x
   x = 100,172,190,656.26/222,071.63
6. Step 6: Final answer
   x = 451,080.55