Finding the Third Proportional to 78,197,136 and 171,779,088

Step by Step Solution

1. Step 1: Write the proportion equation
   78,197,136 : 171,779,088 = 171,779,088 : x
2. Step 2: Convert to fraction form
   78,197,136/171,779,088 = 171,779,088/x
3. Step 3: Cross multiply
   78,197,136x = 171,779,088 × 171,779,088
4. Step 4: Simplify right side
   78,197,136x = 29,508,055,074,111,744
5. Step 5: Solve for x
   x = 29,508,055,074,111,744/78,197,136
6. Step 6: Final answer
   x = 377,354,677.98