Finding the Third Proportional to 156,955 and 228,139

Step by Step Solution

1. Step 1: Write the proportion equation
   156,955 : 228,139 = 228,139 : x
2. Step 2: Convert to fraction form
   156,955/228,139 = 228,139/x
3. Step 3: Cross multiply
   156,955x = 228,139 × 228,139
4. Step 4: Simplify right side
   156,955x = 52,047,403,321
5. Step 5: Solve for x
   x = 52,047,403,321/156,955
6. Step 6: Final answer
   x = 331,607.17