Finding the Third Proportional to 156,570 and 348,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,570 : 348,997.50 = 348,997.50 : x
2. Step 2: Convert to fraction form
   156,570/348,997.50 = 348,997.50/x
3. Step 3: Cross multiply
   156,570x = 348,997.50 × 348,997.50
4. Step 4: Simplify right side
   156,570x = 121,799,255,006.25
5. Step 5: Solve for x
   x = 121,799,255,006.25/156,570
6. Step 6: Final answer
   x = 777,922.05