Finding the Third Proportional to 78,248,841,870 and 169,490,995,831

Step by Step Solution

1. Step 1: Write the proportion equation
   78,248,841,870 : 169,490,995,831 = 169,490,995,831 : x
2. Step 2: Convert to fraction form
   78,248,841,870/169,490,995,831 = 169,490,995,831/x
3. Step 3: Cross multiply
   78,248,841,870x = 169,490,995,831 × 169,490,995,831
4. Step 4: Simplify right side
   78,248,841,870x = 28,727,197,667,784,061,353,984
5. Step 5: Solve for x
   x = 28,727,197,667,784,061,353,984/78,248,841,870
6. Step 6: Final answer
   x = 367,126,170,576.56