Finding the Third Proportional to 123,418,153.50 and 257,051,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,418,153.50 : 257,051,554.50 = 257,051,554.50 : x
2. Step 2: Convert to fraction form
   123,418,153.50/257,051,554.50 = 257,051,554.50/x
3. Step 3: Cross multiply
   123,418,153.50x = 257,051,554.50 × 257,051,554.50
4. Step 4: Simplify right side
   123,418,153.50x = 66,075,501,670,866,472
5. Step 5: Solve for x
   x = 66,075,501,670,866,472/123,418,153.50
6. Step 6: Final answer
   x = 535,379,113.99