Finding the Third Proportional to 386,136 and 590,692.50

Step by Step Solution

1. Step 1: Write the proportion equation
   386,136 : 590,692.50 = 590,692.50 : x
2. Step 2: Convert to fraction form
   386,136/590,692.50 = 590,692.50/x
3. Step 3: Cross multiply
   386,136x = 590,692.50 × 590,692.50
4. Step 4: Simplify right side
   386,136x = 348,917,629,556.25
5. Step 5: Solve for x
   x = 348,917,629,556.25/386,136
6. Step 6: Final answer
   x = 903,613.31