Finding the Third Proportional to 156,915 and 345,501

Step by Step Solution

1. Step 1: Write the proportion equation
   156,915 : 345,501 = 345,501 : x
2. Step 2: Convert to fraction form
   156,915/345,501 = 345,501/x
3. Step 3: Cross multiply
   156,915x = 345,501 × 345,501
4. Step 4: Simplify right side
   156,915x = 119,370,941,001
5. Step 5: Solve for x
   x = 119,370,941,001/156,915
6. Step 6: Final answer
   x = 760,736.33