Finding the Third Proportional to 156,870 and 322,079.63

Step by Step Solution

1. Step 1: Write the proportion equation
   156,870 : 322,079.63 = 322,079.63 : x
2. Step 2: Convert to fraction form
   156,870/322,079.63 = 322,079.63/x
3. Step 3: Cross multiply
   156,870x = 322,079.63 × 322,079.63
4. Step 4: Simplify right side
   156,870x = 103,735,284,840.14
5. Step 5: Solve for x
   x = 103,735,284,840.14/156,870
6. Step 6: Final answer
   x = 661,281.86